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晶体拼接技术能够解决光参量啁啾脉冲放大(OPCPA)过程中非线性晶体口径受限问题,从而有效地提高放大器的输出能力。晶体加工误差补偿是晶体拼接要解决的核心问题之一。对拼接晶体加工误差对光束质量的影响进行了分析,设计了拼接晶体加工误差补偿方案,设计并加工完成拼接晶体加工误差补偿能动反射镜。通过实验验证了拼接晶体加工误差补偿方案的可行性和稳定性,同时证明了该系统满足晶体拼接要求。
The crystal splicing technique can solve the problem of limited aperture of nonlinear crystal during optical parametric chirped pulse amplification (OPCPA), so as to effectively improve the output capability of the amplifier. Crystal processing error compensation is one of the core issues to be solved in crystal splicing. The influence of machining errors on the beam quality is analyzed. The error compensation scheme of spliced crystal is designed and the error compensation active mirror of splicing crystal processing is designed and processed. The feasibility and stability of the error compensation scheme of the splicing crystal machining are verified by experiments, and the system is also proved to meet the requirement of crystal splicing.